Floor jack



FIG. 1 is a perspective view of a floor jack showing the new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof.

The broken lines shown are included for the purpose of illustrating portions of the floor jack that form no part of the claim. 

CLAIM The ornamental design for a floor jack, as shown and described. 